.head_container{
    width:100%;
    height:90px;
    line-height: 90px;
    background: rgb(133,178,246);
    position:relative;
}
.return{
    position: absolute;
    left:1.14%;
}
.monitorSymbol{
    position: absolute;
    left: 45%;
}
.monitorPreference{
    position: absolute;
    font-size: 28px;
    color: #fff;
    left:49%;
    width:130px;
}